1use anyhow::Context as _;
2use fuzzy::StringMatchCandidate;
3
4use collections::HashSet;
5use git::repository::Branch;
6use gpui::{
7 App, Context, DismissEvent, Entity, EventEmitter, FocusHandle, Focusable, InteractiveElement,
8 IntoElement, Modifiers, ModifiersChangedEvent, ParentElement, Render, SharedString, Styled,
9 Subscription, Task, Window, rems,
10};
11use picker::{Picker, PickerDelegate, PickerEditorPosition};
12use project::git_store::Repository;
13use std::sync::Arc;
14use time::OffsetDateTime;
15use time_format::format_local_timestamp;
16use ui::{HighlightedLabel, ListItem, ListItemSpacing, Tooltip, prelude::*};
17use util::ResultExt;
18use workspace::notifications::DetachAndPromptErr;
19use workspace::{ModalView, Workspace};
20
21pub fn register(workspace: &mut Workspace) {
22 workspace.register_action(open);
23 workspace.register_action(switch);
24 workspace.register_action(checkout_branch);
25}
26
27pub fn checkout_branch(
28 workspace: &mut Workspace,
29 _: &zed_actions::git::CheckoutBranch,
30 window: &mut Window,
31 cx: &mut Context<Workspace>,
32) {
33 open(workspace, &zed_actions::git::Branch, window, cx);
34}
35
36pub fn switch(
37 workspace: &mut Workspace,
38 _: &zed_actions::git::Switch,
39 window: &mut Window,
40 cx: &mut Context<Workspace>,
41) {
42 open(workspace, &zed_actions::git::Branch, window, cx);
43}
44
45pub fn open(
46 workspace: &mut Workspace,
47 _: &zed_actions::git::Branch,
48 window: &mut Window,
49 cx: &mut Context<Workspace>,
50) {
51 let repository = workspace.project().read(cx).active_repository(cx);
52 let style = BranchListStyle::Modal;
53 workspace.toggle_modal(window, cx, |window, cx| {
54 BranchList::new(repository, style, rems(34.), window, cx)
55 })
56}
57
58pub fn popover(
59 repository: Option<Entity<Repository>>,
60 window: &mut Window,
61 cx: &mut App,
62) -> Entity<BranchList> {
63 cx.new(|cx| {
64 let list = BranchList::new(repository, BranchListStyle::Popover, rems(20.), window, cx);
65 list.focus_handle(cx).focus(window);
66 list
67 })
68}
69
70#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
71enum BranchListStyle {
72 Modal,
73 Popover,
74}
75
76pub struct BranchList {
77 width: Rems,
78 pub picker: Entity<Picker<BranchListDelegate>>,
79 _subscription: Subscription,
80}
81
82impl BranchList {
83 fn new(
84 repository: Option<Entity<Repository>>,
85 style: BranchListStyle,
86 width: Rems,
87 window: &mut Window,
88 cx: &mut Context<Self>,
89 ) -> Self {
90 let all_branches_request = repository
91 .clone()
92 .map(|repository| repository.update(cx, |repository, _| repository.branches()));
93 let default_branch_request = repository
94 .clone()
95 .map(|repository| repository.update(cx, |repository, _| repository.default_branch()));
96
97 cx.spawn_in(window, async move |this, cx| {
98 let mut all_branches = all_branches_request
99 .context("No active repository")?
100 .await??;
101 let default_branch = default_branch_request
102 .context("No active repository")?
103 .await
104 .map(Result::ok)
105 .ok()
106 .flatten()
107 .flatten();
108
109 let all_branches = cx
110 .background_spawn(async move {
111 let remote_upstreams: HashSet<_> = all_branches
112 .iter()
113 .filter_map(|branch| {
114 branch
115 .upstream
116 .as_ref()
117 .filter(|upstream| upstream.is_remote())
118 .map(|upstream| upstream.ref_name.clone())
119 })
120 .collect();
121
122 all_branches.retain(|branch| !remote_upstreams.contains(&branch.ref_name));
123
124 all_branches.sort_by_key(|branch| {
125 branch
126 .most_recent_commit
127 .as_ref()
128 .map(|commit| 0 - commit.commit_timestamp)
129 });
130
131 all_branches
132 })
133 .await;
134
135 this.update_in(cx, |this, window, cx| {
136 this.picker.update(cx, |picker, cx| {
137 picker.delegate.default_branch = default_branch;
138 picker.delegate.all_branches = Some(all_branches);
139 picker.refresh(window, cx);
140 })
141 })?;
142
143 anyhow::Ok(())
144 })
145 .detach_and_log_err(cx);
146
147 let delegate = BranchListDelegate::new(repository, style);
148 let picker = cx.new(|cx| Picker::uniform_list(delegate, window, cx));
149
150 let _subscription = cx.subscribe(&picker, |_, _, _, cx| {
151 cx.emit(DismissEvent);
152 });
153
154 Self {
155 picker,
156 width,
157 _subscription,
158 }
159 }
160
161 fn handle_modifiers_changed(
162 &mut self,
163 ev: &ModifiersChangedEvent,
164 _: &mut Window,
165 cx: &mut Context<Self>,
166 ) {
167 self.picker
168 .update(cx, |picker, _| picker.delegate.modifiers = ev.modifiers)
169 }
170}
171impl ModalView for BranchList {}
172impl EventEmitter<DismissEvent> for BranchList {}
173
174impl Focusable for BranchList {
175 fn focus_handle(&self, cx: &App) -> FocusHandle {
176 self.picker.focus_handle(cx)
177 }
178}
179
180impl Render for BranchList {
181 fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
182 v_flex()
183 .key_context("GitBranchSelector")
184 .w(self.width)
185 .on_modifiers_changed(cx.listener(Self::handle_modifiers_changed))
186 .child(self.picker.clone())
187 .on_mouse_down_out({
188 cx.listener(move |this, _, window, cx| {
189 this.picker.update(cx, |this, cx| {
190 this.cancel(&Default::default(), window, cx);
191 })
192 })
193 })
194 }
195}
196
197#[derive(Debug, Clone)]
198struct BranchEntry {
199 branch: Branch,
200 positions: Vec<usize>,
201 is_new: bool,
202}
203
204pub struct BranchListDelegate {
205 matches: Vec<BranchEntry>,
206 all_branches: Option<Vec<Branch>>,
207 default_branch: Option<SharedString>,
208 repo: Option<Entity<Repository>>,
209 style: BranchListStyle,
210 selected_index: usize,
211 last_query: String,
212 modifiers: Modifiers,
213}
214
215impl BranchListDelegate {
216 fn new(repo: Option<Entity<Repository>>, style: BranchListStyle) -> Self {
217 Self {
218 matches: vec![],
219 repo,
220 style,
221 all_branches: None,
222 default_branch: None,
223 selected_index: 0,
224 last_query: Default::default(),
225 modifiers: Default::default(),
226 }
227 }
228
229 fn create_branch(
230 &self,
231 from_branch: Option<SharedString>,
232 new_branch_name: SharedString,
233 window: &mut Window,
234 cx: &mut Context<Picker<Self>>,
235 ) {
236 let Some(repo) = self.repo.clone() else {
237 return;
238 };
239 let new_branch_name = new_branch_name.to_string().replace(' ', "-");
240 cx.spawn(async move |_, cx| {
241 if let Some(based_branch) = from_branch {
242 repo.update(cx, |repo, _| repo.change_branch(based_branch.to_string()))?
243 .await??;
244 }
245
246 repo.update(cx, |repo, _| {
247 repo.create_branch(new_branch_name.to_string())
248 })?
249 .await??;
250 repo.update(cx, |repo, _| {
251 repo.change_branch(new_branch_name.to_string())
252 })?
253 .await??;
254
255 Ok(())
256 })
257 .detach_and_prompt_err("Failed to create branch", window, cx, |e, _, _| {
258 Some(e.to_string())
259 });
260 cx.emit(DismissEvent);
261 }
262}
263
264impl PickerDelegate for BranchListDelegate {
265 type ListItem = ListItem;
266
267 fn placeholder_text(&self, _window: &mut Window, _cx: &mut App) -> Arc<str> {
268 "Select branch…".into()
269 }
270
271 fn editor_position(&self) -> PickerEditorPosition {
272 match self.style {
273 BranchListStyle::Modal => PickerEditorPosition::Start,
274 BranchListStyle::Popover => PickerEditorPosition::End,
275 }
276 }
277
278 fn match_count(&self) -> usize {
279 self.matches.len()
280 }
281
282 fn selected_index(&self) -> usize {
283 self.selected_index
284 }
285
286 fn set_selected_index(
287 &mut self,
288 ix: usize,
289 _window: &mut Window,
290 _: &mut Context<Picker<Self>>,
291 ) {
292 self.selected_index = ix;
293 }
294
295 fn update_matches(
296 &mut self,
297 query: String,
298 window: &mut Window,
299 cx: &mut Context<Picker<Self>>,
300 ) -> Task<()> {
301 let Some(all_branches) = self.all_branches.clone() else {
302 return Task::ready(());
303 };
304
305 const RECENT_BRANCHES_COUNT: usize = 10;
306 cx.spawn_in(window, async move |picker, cx| {
307 let mut matches: Vec<BranchEntry> = if query.is_empty() {
308 all_branches
309 .into_iter()
310 .filter(|branch| !branch.is_remote())
311 .take(RECENT_BRANCHES_COUNT)
312 .map(|branch| BranchEntry {
313 branch,
314 positions: Vec::new(),
315 is_new: false,
316 })
317 .collect()
318 } else {
319 let candidates = all_branches
320 .iter()
321 .enumerate()
322 .map(|(ix, branch)| StringMatchCandidate::new(ix, branch.name()))
323 .collect::<Vec<StringMatchCandidate>>();
324 fuzzy::match_strings(
325 &candidates,
326 &query,
327 true,
328 true,
329 10000,
330 &Default::default(),
331 cx.background_executor().clone(),
332 )
333 .await
334 .into_iter()
335 .map(|candidate| BranchEntry {
336 branch: all_branches[candidate.candidate_id].clone(),
337 positions: candidate.positions,
338 is_new: false,
339 })
340 .collect()
341 };
342 picker
343 .update(cx, |picker, _| {
344 if !query.is_empty()
345 && !matches
346 .first()
347 .is_some_and(|entry| entry.branch.name() == query)
348 {
349 let query = query.replace(' ', "-");
350 matches.push(BranchEntry {
351 branch: Branch {
352 ref_name: format!("refs/heads/{query}").into(),
353 is_head: false,
354 upstream: None,
355 most_recent_commit: None,
356 },
357 positions: Vec::new(),
358 is_new: true,
359 })
360 }
361 let delegate = &mut picker.delegate;
362 delegate.matches = matches;
363 if delegate.matches.is_empty() {
364 delegate.selected_index = 0;
365 } else {
366 delegate.selected_index =
367 core::cmp::min(delegate.selected_index, delegate.matches.len() - 1);
368 }
369 delegate.last_query = query;
370 })
371 .log_err();
372 })
373 }
374
375 fn confirm(&mut self, secondary: bool, window: &mut Window, cx: &mut Context<Picker<Self>>) {
376 let Some(entry) = self.matches.get(self.selected_index()) else {
377 return;
378 };
379 if entry.is_new {
380 let from_branch = if secondary {
381 self.default_branch.clone()
382 } else {
383 None
384 };
385 self.create_branch(
386 from_branch,
387 entry.branch.name().to_owned().into(),
388 window,
389 cx,
390 );
391 return;
392 }
393
394 let current_branch = self.repo.as_ref().map(|repo| {
395 repo.read_with(cx, |repo, _| {
396 repo.branch.as_ref().map(|branch| branch.ref_name.clone())
397 })
398 });
399
400 if current_branch
401 .flatten()
402 .is_some_and(|current_branch| current_branch == entry.branch.ref_name)
403 {
404 cx.emit(DismissEvent);
405 return;
406 }
407
408 cx.spawn_in(window, {
409 let branch = entry.branch.clone();
410 async move |picker, cx| {
411 let branch_change_task = picker.update(cx, |this, cx| {
412 let repo = this
413 .delegate
414 .repo
415 .as_ref()
416 .context("No active repository")?
417 .clone();
418
419 let mut cx = cx.to_async();
420
421 anyhow::Ok(async move {
422 repo.update(&mut cx, |repo, _| {
423 repo.change_branch(branch.name().to_string())
424 })?
425 .await?
426 })
427 })??;
428
429 branch_change_task.await?;
430
431 picker.update(cx, |_, cx| {
432 cx.emit(DismissEvent);
433
434 anyhow::Ok(())
435 })
436 }
437 })
438 .detach_and_prompt_err("Failed to change branch", window, cx, |_, _, _| None);
439 }
440
441 fn dismissed(&mut self, _: &mut Window, cx: &mut Context<Picker<Self>>) {
442 cx.emit(DismissEvent);
443 }
444
445 fn render_match(
446 &self,
447 ix: usize,
448 selected: bool,
449 _window: &mut Window,
450 cx: &mut Context<Picker<Self>>,
451 ) -> Option<Self::ListItem> {
452 let entry = &self.matches[ix];
453
454 let (commit_time, subject) = entry
455 .branch
456 .most_recent_commit
457 .as_ref()
458 .map(|commit| {
459 let subject = commit.subject.clone();
460 let commit_time = OffsetDateTime::from_unix_timestamp(commit.commit_timestamp)
461 .unwrap_or_else(|_| OffsetDateTime::now_utc());
462 let formatted_time = format_local_timestamp(
463 commit_time,
464 OffsetDateTime::now_utc(),
465 time_format::TimestampFormat::Relative,
466 );
467 (Some(formatted_time), Some(subject))
468 })
469 .unwrap_or_else(|| (None, None));
470
471 let icon = if let Some(default_branch) = self.default_branch.clone()
472 && entry.is_new
473 {
474 Some(
475 IconButton::new("branch-from-default", IconName::GitBranchAlt)
476 .on_click(cx.listener(move |this, _, window, cx| {
477 this.delegate.set_selected_index(ix, window, cx);
478 this.delegate.confirm(true, window, cx);
479 }))
480 .tooltip(move |window, cx| {
481 Tooltip::for_action(
482 format!("Create branch based off default: {default_branch}"),
483 &menu::SecondaryConfirm,
484 window,
485 cx,
486 )
487 }),
488 )
489 } else {
490 None
491 };
492
493 let branch_name = if entry.is_new {
494 h_flex()
495 .gap_1()
496 .child(
497 Icon::new(IconName::Plus)
498 .size(IconSize::Small)
499 .color(Color::Muted),
500 )
501 .child(
502 Label::new(format!("Create branch \"{}\"…", entry.branch.name()))
503 .single_line()
504 .truncate(),
505 )
506 .into_any_element()
507 } else {
508 HighlightedLabel::new(entry.branch.name().to_owned(), entry.positions.clone())
509 .truncate()
510 .into_any_element()
511 };
512
513 Some(
514 ListItem::new(SharedString::from(format!("vcs-menu-{ix}")))
515 .inset(true)
516 .spacing(ListItemSpacing::Sparse)
517 .toggle_state(selected)
518 .child(
519 v_flex()
520 .w_full()
521 .overflow_hidden()
522 .child(
523 h_flex()
524 .gap_6()
525 .justify_between()
526 .overflow_x_hidden()
527 .child(branch_name)
528 .when_some(commit_time, |label, commit_time| {
529 label.child(
530 Label::new(commit_time)
531 .size(LabelSize::Small)
532 .color(Color::Muted)
533 .into_element(),
534 )
535 }),
536 )
537 .when(self.style == BranchListStyle::Modal, |el| {
538 el.child(div().max_w_96().child({
539 let message = if entry.is_new {
540 if let Some(current_branch) =
541 self.repo.as_ref().and_then(|repo| {
542 repo.read(cx).branch.as_ref().map(|b| b.name())
543 })
544 {
545 format!("based off {}", current_branch)
546 } else {
547 "based off the current branch".to_string()
548 }
549 } else {
550 subject.unwrap_or("no commits found".into()).to_string()
551 };
552 Label::new(message)
553 .size(LabelSize::Small)
554 .truncate()
555 .color(Color::Muted)
556 }))
557 }),
558 )
559 .end_slot::<IconButton>(icon),
560 )
561 }
562
563 fn no_matches_text(&self, _window: &mut Window, _cx: &mut App) -> Option<SharedString> {
564 None
565 }
566}